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What energy changes occur when a falling rock hits the ground?
Kinetic Enegry
When does a object have the most kinetic energy?
In the case of a falling object, the instant before the object hits the ground. U = KE + PE; PE=-KE . Inversely, the object has the highest potential energy (lowest kinetic energy) at the starting point of the fall.
When an object falls which energy changes to?
As the object falls, it PEG or potential gravitational energy becomes kinetic energy. Before falling, it has for example 10 joules of PEG and 0 joules of Kinetic energy. As it falls, the PEG decreases and the kinetic energy increases, until it hits the ground, when all the energy is dispersed as sound, heat, etc.
A boulder is raised above the ground so that its potential energy relative to the ground is 200 J Then it is dropped What is its kinetic energy just before it hits the ground?
260 J. At the point of release, assuming the boulder is stationary before release, its potential energy is 260 J and its kinetic energy is zero. As it falls, the potential energy is converted into kinetic energy, but energy is neither gained nor lost, so at the point of contact with the ground its potential energy is zero and its kinetic energy is 260 J. If you want to be particularly critical, it could be argued that during the fall some energy is expended in displacing the air, but for a boulder the amount of energy expended would be a very small proportion of the total.
What type of energy is it when a ball hits the ground?
it's still kinetic energy when it's in the air, MOVING, that's what kinetic energy is. But before it falls, let's say it's on the top of a hill or in someone's hand, it has potential energy.
Describe a stone falling off the tabletop in terms of both kinetic energy and potential energy?
Sitting on the table the stone has potential energy, relative to the ground, of weight times height, mgh. It has zero kinetic energy so its total energy is E = 0 + mgh. When it begins falling it loses potential energy (as it loses height) and gains kinetic energy ( as it picks up speed) so the sum stays the same as initially E = KE + PE = mgh. Just before it hits the ground all of its potential energy is gone and has been transformed into kinetic energy. So the kinetic energy at the bottom (1/2)mv^2 will equal the potential energy at the top.
What are good things about kinetic energy?
Well i think there is nothing good or bad about kinetic energy, because its just something in motion like if you drop a pen that pen was in motion before it hits the ground
What forms of energy is there when the baseball is rolling when it hits the ground?
As the baseball is falling, it still has a lot of the kinetic energy that it got from the bat, and it keeps picking up more kinetic energy from gravity until it hits the ground. Once it hits the ground and rolls, it steadily loses kinetic energy to push grass out of the way, and to slightly heat some grass with friction by rubbing against it, until its kinetic energy is all used up and it stops rolling.
What is the kinetic energy of an object weighing 65 kg dropped from a height of 40m?
Kinetic energy is dependent on which point you are talking about. When it is about to be dropped, kinetic energy is zero. When it reaches almost hits the ground, there is maximum kinetic energy.
What energy changes occur when a falling rock hits the ground?
Kinetic Enegry
When does a object have the most kinetic energy?
In the case of a falling object, the instant before the object hits the ground. U = KE + PE; PE=-KE . Inversely, the object has the highest potential energy (lowest kinetic energy) at the starting point of the fall.
How does potential and kinetic energy relate to football?
The football has (gravitational) potential energy because of its position above the ground. It also has kinetic energy because it is moving. The combined energy is called mechanical energy.
When an object falls which energy changes to?
As the object falls, it PEG or potential gravitational energy becomes kinetic energy. Before falling, it has for example 10 joules of PEG and 0 joules of Kinetic energy. As it falls, the PEG decreases and the kinetic energy increases, until it hits the ground, when all the energy is dispersed as sound, heat, etc.
How does the total energy change when when a falling rock hits the ground?
when the rock falls it gain kinetic energy when it falls.
A boulder is raised above the ground so that its potential energy relative to the ground is 200 J Then it is dropped What is its kinetic energy just before it hits the ground?
260 J. At the point of release, assuming the boulder is stationary before release, its potential energy is 260 J and its kinetic energy is zero. As it falls, the potential energy is converted into kinetic energy, but energy is neither gained nor lost, so at the point of contact with the ground its potential energy is zero and its kinetic energy is 260 J. If you want to be particularly critical, it could be argued that during the fall some energy is expended in displacing the air, but for a boulder the amount of energy expended would be a very small proportion of the total.
When an egg hits the ground does it have friction?
the height of an object has more POTENTIAL ENERGY.Converted to kinetic energy
How Kinetic Energy is related to Potential Energy?
Potential and kinetic energy are sort of like inverses. They are not technically inverses strictly speaking in the mathematical sense. Potential energy can become kinetic energy, and vice versa. Keep in mind the mathematical concept of the change in each. (change in) Potential energy= (change in) Kinetic energy. For example, let's say that we had a mass of 1 kg suspended 1 metre above the ground. If we drop it, its kinetic energy by the time it hits the ground is (1/2)mv2 . (1/2)(1kg)(9.82 ) (m2 ) or 48.02J It's potential energy at this point is 0, because it is on the ground and is not suspended in the air. Potential and kinetic energies act as inverses because before the mass was dropped its kinetic energy was 0 and its potential energy was 48.02J. By the time the mass had dropped to the ground however, the potential energy had all transferred into kinetic energy.
